Q1. Where does the oxygen released in photosynthesis originate from?A. Carbon dioxideB. WaterC. GlucoseD. Chlorophyll
Q2. Which structure in the chloroplast is responsible for ATP synthesis?A. StromaB. Thylakoid membraneC. GranaD. Stroma lamellae
Q3. Which statement correctly describes the light reaction of photosynthesis?A. It occurs in the stroma.B. It produces glucose directly.C. It results in the formation of ATP and NADPH.D. It does not require sunlight.
Q4. What is the main function of the enzyme RuBisCO?A. It breaks down glucose.B. It captures carbon dioxide for the Calvin cycle.C. It synthesizes ATP.D. It releases oxygen.
Q5. Which process in photosynthesis generates ATP through proton movement?A. Cyclic photophosphorylationB. Non-cyclic photophosphorylationC. ChemiosmosisD. Calvin cycle
Q6. Which of the following parts of the chloroplast is responsible for trapping light energy?A. StromaB. GranaC. RibosomesD. Starch granules
Q8. Which of the following statements about photorespiration is correct?A. It enhances the efficiency of photosynthesis.B. It occurs in C4 plants.C. It results in the release of CO2 and consumes ATP.D. It takes place in the presence of high CO2 concentrations.
Q9. What is the function of accessory pigments in photosynthesis?A. Capture additional light wavelengthsB. Transfer energy to chlorophyll aC. Prevent photooxidationD. All of the above
Q10. Which of the following is a correct statement about the C4 pathway?A. It produces a three-carbon compound as its first stable product.B. It occurs only in the mesophyll cells.C. It involves oxaloacetic acid as a primary product.D. It is less efficient than the C3 pathway.